Evolutionary synthesis of low-sensitivity antenna matching networks using adjacency matrix representation

2009 ◽  
Author(s):  
Leonardo B. de Sa ◽  
Pedr Vieira ◽  
Antonio Mesquita
Keyword(s):  
Adjacency Matrix ◽  
Matrix Representation ◽  
Evolutionary Synthesis ◽  
Matching Networks ◽  
Low Sensitivity

An Evolutionary Method for Synthesizing Low-Sensitivity Lossless Matching Networks

2016 ◽  
Vol 35 (11) ◽  
pp. 3811-3829
Author(s):  
Leonardo Bruno de Sá ◽  
Maurício Henrique Costa Dias ◽  
Antonio Carneiro de Mesquita Filho
Keyword(s):  
Matching Networks ◽  
Evolutionary Method ◽  
Low Sensitivity

scholarly journals A holographic matrix representation of the metamorphic parallel mechanisms

2019 ◽  
Vol 10 (2) ◽  
pp. 437-447
Author(s):  
Wei Sun ◽  
Jianyi Kong ◽  
Liangbo Sun
Keyword(s):  
Adjacency Matrix ◽  
Topological Structure ◽  
Incidence Matrix ◽  
Matrix Representation ◽  
Evolutionary Relationships ◽  
Parallel Mechanisms ◽  
Metamorphic Mechanism ◽  
The Matrix ◽  
Metamorphic Mechanisms

Abstract. Metamorphic mechanisms belong to the class of mechanisms that are able to change their configurations sequentially to meet different requirements. In this paper, a holographic matrix representation for describing the topological structure of metamorphic mechanisms was proposed. The matrix includes the adjacency matrix, incidence matrix, links attribute and kinematic pairs attribute. Then, the expanded holographic matrix is introduced, which includes driving link, frame link and the identifier of the configurations. Furthermore, a matrix representation of an original metamorphic mechanism is proposed, which has the ability to evolve into various sub-configurations. And evolutionary relationships between mechanisms in sub-configurations and the original metamorphic mechanism are determined distinctly. Examples are provided to demonstrate the validation of the method.

A Matrix Representation and Motion Space Exchange Metamorphic Operation

2011 ◽  
Vol 308-310 ◽  
pp. 2058-2061
Author(s):  
Shu Jun Li ◽  
Jian Sheng Dai
Keyword(s):  
Adjacency Matrix ◽  
Matrix Representation ◽  
Matrix Operation ◽  
Planar Mechanism ◽  
Kinematic Chains ◽  
Orientation Change ◽  
Joint Axis ◽  
The Matrix

The paper presents a matrix representation of mechanical chains based on proposed joint-axis matrix, and a matrix operation of joints orientation change metamorphic processes. A four elements joint-axis matrix with joints types and orientations is developed first, and an augmented adjacency matrix of kinematic chains is formed by adding the elements of joint-axis matrix into the corresponding positions of general adjacency matrix of kinematic chains. Then the matrix operation of metamorphic process is performed through changing the orientation of metamorphic joint of augmented planar mechanism to transform the configuration of the mechanism from planar to spatial one.

Energy flow in dendrimers: An adjacency matrix representation

2006 ◽  
Vol 433 (1-3) ◽  
pp. 239-243 ◽  
Author(s):  
David L. Andrews ◽  
Shaopeng Li
Keyword(s):  
Adjacency Matrix ◽  
Energy Flow ◽  
Matrix Representation

Synthesis of Low Sensitivity Broadband Matching Networks Using Clonal Selection Algorithm

2016 ◽  
Vol 14 (7) ◽  
pp. 3168-3177 ◽  
Author(s):  
Leandro Teixeira Dornelles ◽  
Leonardo Bruno de Sa ◽  
Antonio Carneiro de Mesquita Filho
Keyword(s):  
Clonal Selection ◽  
Clonal Selection Algorithm ◽  
Selection Algorithm ◽  
Matching Networks ◽  
Broadband Matching ◽  
Low Sensitivity

Design of Sensitive Photographic Materials for the High-Voltage Electron Microscope

1975 ◽  
Vol 33 ◽  
pp. 156-157
Author(s):  
Murray Vernon King ◽  
Donald F. Parsons
Keyword(s):  
Electron Microscope ◽  
Radiation Damage ◽  
High Voltage ◽  
Radiation Sensitivity ◽  
Fast Electrons ◽  
Voltage Electron ◽  
High Voltage Electron Microscope ◽  
High Voltage Electron ◽  
Biological Studies ◽  
Low Sensitivity

Effective application of the high-voltage electron microscope to a wide variety of biological studies has been restricted by the radiation sensitivity of biological systems. The problem of radiation damage has been recognized as a serious factor influencing the amount of information attainable from biological specimens in electron microscopy at conventional voltages around 100 kV. The problem proves to be even more severe at higher voltages around 1 MV. In this range, the problem is the relatively low sensitivity of the existing recording media, which entails inordinately long exposures that give rise to severe radiation damage. This low sensitivity arises from the small linear energy transfer for fast electrons. Few developable grains are created in the emulsion per electron, while most of the energy of the electrons is wasted in the film base.

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